Year	Percent
1996-01-01	21.87330
1997-01-01	21.18870
1998-01-01	15.93240
1999-01-01	18.67020
2000-01-01	20.93260
2001-01-01	15.47700
2002-01-01	8.79364
2003-01-01	18.31670
2004-01-01	7.87160
2005-01-01	11.55570
2006-01-01	15.35250
2007-01-01	15.30290
2008-01-01	7.73020
2009-01-01	9.33210
2010-01-01	4.92489
2011-01-01	8.23687
2012-01-01	13.56250
2013-01-01	2.17984
2014-01-01	-8.83638
2015-01-01	9.79049
2016-01-01	9.12457